Gap, Banana Republic and Old Navy: 30% off + FREE Shipping on $100+ October 4, 2010 This post may contain a link to an affiliate. See my disclosure policy for more information. Today, 10/4 and tomorrow, 10/5 only, Gap, Banana Republic and Old Navy are offering up 30% off + FREE shipping on orders of $100 or more! Just use coupon code SAVEBIG at checkout to see the savings. Expires 10/5/10.